Z.K science

  SUBJECT: BIOLOGY   TOPIC: SENSE ORGANS  PERFORMANCE OBJECTIVE: AT THE END OF THE LESSON TE STUDENT SHOULD BE ABLE TO: 1. List the major sense organs and infer their location  2. Describe the organ of taste and identify different parts of the tongue associated with sweetness, bitterness, salty taste and sore taste.  3. Describe the structure of the mammalian ear and explain the functions of the ear-hearing, balance.  4. Describe the mammalian eye and explain the functions of its various parts.  5. Explain the function of the eye: - Image formation - Accommodation, 6. Explain the term myopia, hypermetropia, astigmatism cataracts, night blindness and name the kind of lens that can be used to correct myopic and hyper-metropia defects.                              DEFFINITION AND TYPES OF SENSE ORGANS  Definition: A sense organ is defined as group of specialised cells tissues or receptors which is able to receive, perceive or detect stimulus and transmit the information, imp